Zobrazeno 1 - 10
of 628
pro vyhledávání: '"Junqiang Sun"'
Study of Predicting the Performance of I-V Curves Through Photoluminescence Spectral Characteristics
Publikováno v:
IEEE Photonics Journal, Vol 16, Iss 3, Pp 1-7 (2024)
Quality of GaN LEDs is closely related to the defects in quantum wells. Effectively evaluating the performance of LEDs is a key step in mass production. Electrical characterization testing is very effective for characterizing the performance of LEDs,
Externí odkaz:
https://doaj.org/article/211c61e0446f41eb9f9ed35bed4d1319
Publikováno v:
Nanomaterials, Vol 13, Iss 10, p 1626 (2023)
The Journal retracts the article “The Design, Fabrication and Characterization of Grating Couplers for SiGe Photonic Integration Employing a Reflective Back Mirror” [...]
Externí odkaz:
https://doaj.org/article/3805c4eb691e49e58709308586cad1f3
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 3, Pp 1-9 (2021)
A hybrid silicon/aluminum nitride waveguide on the silicon-on-insulator platform is proposed to achieve an efficient Brillouin optomechanical interaction. Both intra-optical-mode and inter-optical-mode Brillouin scattering can be achieved. The novel
Externí odkaz:
https://doaj.org/article/a1795742b94d4c3baf513b8408edf3df
Publikováno v:
Cancer Cell International, Vol 20, Iss 1, Pp 1-10 (2020)
Abstract Background Genetic and epigenetic alterations have been indicated to be closely correlated with the carcinogenesis, DNA methylation is one of most frequently occurring molecular behavior that take place early during this complicated process
Externí odkaz:
https://doaj.org/article/a147a602a69f41b1b14dea11ca6069ba
Publikováno v:
IEEE Photonics Journal, Vol 12, Iss 4, Pp 1-11 (2020)
We design a partially suspended silicon nitride (Si3N4) slot waveguide on silica to realize efficient on-chip forward stimulated Brillouin scattering (FSBS). The slot waveguide can intensify radiation pressure close to the slot and simultaneously con
Externí odkaz:
https://doaj.org/article/dd9db98bc8f24c8297fa5b7798a4d8dc
Publikováno v:
Nanomaterials, Vol 12, Iss 21, p 3789 (2022)
We propose and demonstrate an efficient grating coupler for integrated SiGe photonic devices. A bottom metal layer is adopted to enhance the coupling efficiency on the wafer backside. A low coupling loss of −1.34 dB and −0.79 dB can be theoretica
Externí odkaz:
https://doaj.org/article/6f58d4abf3ee4a84a78e50b7445322cb
Publikováno v:
Remote Sensing, Vol 14, Iss 19, p 4754 (2022)
Multispectral band observations from Terra and Aqua MODIS, launched in December 1999 and May 2002, respectively, and from SNPP and NOAA-20 VIIRS, launched in November 2011 and October 2017, respectively, have continuously enabled a broad range of app
Externí odkaz:
https://doaj.org/article/7303001cdcb34b4caee0915493135045
Publikováno v:
Earth and Space Science, Vol 6, Iss 5, Pp 698-715 (2019)
Abstract The MODerate‐resolution Imaging Spectroradiometer (MODIS) has 36 bands, among which 6, bands 20–25, are middle‐wave infrared (MWIR) bands, covering a wavelength range from approximately 3.750 to 4.515 μm. Significant crosstalk effect
Externí odkaz:
https://doaj.org/article/06bf5e21ffb2441a8c1634130946892d
Publikováno v:
IEEE Photonics Journal, Vol 11, Iss 1, Pp 1-12 (2019)
A multiple microwave frequency measurement is experimentally demonstrated by exploiting stimulated Brillouin scattering and nonlinear fitting. Through sweeping a reference frequency during the stimulated Brillouin scattering process, the frequency in
Externí odkaz:
https://doaj.org/article/b9f0d24f79df46d59b6c9173e415b7e5
Publikováno v:
IEEE Photonics Journal, Vol 10, Iss 4, Pp 1-10 (2018)
We analyze theoretically biaxially tensile strained Ge/Si0.18Ge0.82 multiple quantum wells (MQWs) for electro-absorption modulators with low polarization sensitivities. The difference between TE and TM polarized momentum matrix elements and absorptio
Externí odkaz:
https://doaj.org/article/16e09648ac8846fdb43524311ba7368b